Kotlin 1.9.0 (#3835)

Update to Kotlin 1.9.0 and migrate to newer language idioms.

- Remove unnecessary @OptIn for features migrated to mainstream
- Use `data object` where appropriate
- Use new enum `entries` property

app/src/main/java/com/keylesspalace/tusky/components/notifications/NotificationHelper.java

@@ -285,7 +285,7 @@ public class NotificationHelper {
         int accountId = (int) account.getId();
 
         // Initialise the map with all channel IDs.
-        for (Notification.Type ty : Notification.Type.values()) {
+        for (Notification.Type ty : Notification.Type.getEntries()) {
             channelGroups.put(getChannelId(account, ty), new ArrayList<>());
         }
 

app/src/main/java/com/keylesspalace/tusky/components/notifications/NotificationsFragment.kt

@@ -293,7 +293,7 @@ class NotificationsFragment :
                             val position = adapter.snapshot().indexOfFirst {
                                 it?.statusViewData?.status?.id == (action as StatusAction).statusViewData.id
                             }
-                            if (position != RecyclerView.NO_POSITION) {
+                            if (position != NO_POSITION) {
                                 adapter.notifyItemChanged(position)
                             }
                         }

app/src/main/java/com/keylesspalace/tusky/components/notifications/NotificationsPagingAdapter.kt

@@ -124,7 +124,7 @@ class NotificationsPagingAdapter(
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
 
-        return when (NotificationViewKind.values()[viewType]) {
+        return when (NotificationViewKind.entries[viewType]) {
             NotificationViewKind.STATUS -> {
                 StatusViewHolder(
                     ItemStatusBinding.inflate(inflater, parent, false),

app/src/main/java/com/keylesspalace/tusky/components/notifications/NotificationsViewModel.kt

@@ -46,7 +46,6 @@ import com.keylesspalace.tusky.util.toViewData
 import com.keylesspalace.tusky.viewdata.NotificationViewData
 import com.keylesspalace.tusky.viewdata.StatusViewData
 import kotlinx.coroutines.ExperimentalCoroutinesApi
-import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableSharedFlow
@@ -70,7 +69,6 @@ import kotlinx.coroutines.rx3.await
 import retrofit2.HttpException
 import javax.inject.Inject
 import kotlin.time.Duration.Companion.milliseconds
-import kotlin.time.ExperimentalTime
 
 data class UiState(
     /** Filtered notification types */
@@ -103,7 +101,7 @@ sealed class UiAction
 /** Actions the user can trigger from the UI. These actions may fail. */
 sealed class FallibleUiAction : UiAction() {
     /** Clear all notifications */
-    object ClearNotifications : FallibleUiAction()
+    data object ClearNotifications : FallibleUiAction()
 }
 
 /**
@@ -129,7 +127,7 @@ sealed class InfallibleUiAction : UiAction() {
     // Resets the account's `lastNotificationId`, which can't fail, which is why this is
     // infallible. Reloading the data may fail, but that's handled by the paging system /
     // adapter refresh logic.
-    object LoadNewest : InfallibleUiAction()
+    data object LoadNewest : InfallibleUiAction()
 }
 
 /** Actions the user can trigger on an individual notification. These may fail. */
@@ -146,13 +144,13 @@ sealed class UiSuccess {
     // of these three should trigger the UI to refresh.
 
     /** A user was blocked */
-    object Block : UiSuccess()
+    data object Block : UiSuccess()
 
     /** A user was muted */
-    object Mute : UiSuccess()
+    data object Mute : UiSuccess()
 
     /** A conversation was muted */
-    object MuteConversation : UiSuccess()
+    data object MuteConversation : UiSuccess()
 }
 
 /** The result of a successful action on a notification */
@@ -286,7 +284,7 @@ sealed class UiError(
     }
 }
 
-@OptIn(ExperimentalCoroutinesApi::class, FlowPreview::class, ExperimentalTime::class)
+@OptIn(ExperimentalCoroutinesApi::class)
 class NotificationsViewModel @Inject constructor(
     private val repository: NotificationsRepository,
     private val preferences: SharedPreferences,